The No. 1 circuit protection brand in the world. 

Littelfuse continues to promote its own development by investing in the future and value-added customer relationships, including acquisitions and new product development that strengthen the company's global infrastructure. Our brand is the cornerstone of this kind of investment and our commitment to every customer. Littelfuse is the world's leading supplier of circuit protection products, providing customers with world-renowned and top-performing brand products in the electronics, telecommunications, automotive and electrical industries.